/Engine/Source/Runtime/Engine/Public/SpeedTreeWind.h
struct SBranchWindLevel
float[NUM_WIND_...
m_afDirectionAdherence
float[NUM_WIND_...
m_afDistance
float[NUM_WIND_...
m_afWhip
float
m_fTurbulence
float
m_fTwitch
float
m_fTwitchFreqScale